Teach you how to create SSM project structure in idea

Maven

SSM The project needs to use Maven To manage dependency , So we need to configure Maven,Maven It's easy to configure , I'm not going to show you .

Create structure

First , We build new Maven project , Check archetype, choice archetype-webapp Templates , Then create .

Here, wait patiently for the download to complete .

At this point, many white people may wonder why they created it web Project does not java Folder .

You can see , It's no use here Java Related folders .

We are directly in the main Right click the folder to create a new folder , A... Will be displayed below java, Just create it directly .

Create a hierarchy

here , We follow the rules , Create a package .

The project structure varies , For example, three-tier architecture , According to your needs .

I'll just show you a little .

Here, these structures can be named according to the specifications , There are many structures , There are also many layered approaches , Here we have the right to draw lessons from .

Configuration dependency

<dependencies>
    <!--dependency>
      <groupId>org.example</groupId>
      <artifactId>[the artifact id of the block to be mounted]</artifactId>
      <version>1.0-SNAPSHOT</version>
    </dependency-->

    <!--mybatis-->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis</artifactId>
      <version>3.5.9</version>
    </dependency>
    <!--mybatis-spring-->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis-spring</artifactId>
      <version>2.0.7</version>
    </dependency>

    <!-- database -->
    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>5.1.47</version>
    </dependency>
    <!-- Database connection pool -->
    <!--druid-->
    <dependency>
      <groupId>com.alibaba</groupId>
      <artifactId>druid</artifactId>
      <version>1.1.18</version>
    </dependency>
    <!-- c3p0 -->
    <dependency>
      <groupId>com.mchange</groupId>
      <artifactId>c3p0</artifactId>
      <version>0.9.5.2</version>
    </dependency>

    <!--  spring-mvc frame   -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>5.1.6.RELEASE</version>
    </dependency>
    <!--spring test -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-test</artifactId>
      <version>5.1.6.RELEASE</version>
    </dependency>
    <!--spring Integrate jdbc-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jdbc</artifactId>
      <version>5.1.6.RELEASE</version>
    </dependency>
    <!--spring Business management -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-tx</artifactId>
      <version>5.1.6.RELEASE</version>
    </dependency>

    <!-- unit testing , coordination spring-test Can be used together spring test -->
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.12</version>
      <scope>test</scope>
    </dependency>
    <!--servlet-->
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>javax.servlet-api</artifactId>
      <version>3.1.0</version>
    </dependency>
    <!--jsp-->
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>jsp-api</artifactId>
      <version>2.0</version>
    </dependency>
    <!--jstl-api-->
    <dependency>
      <groupId>javax.servlet.jsp.jstl</groupId>
      <artifactId>jstl-api</artifactId>
      <version>1.2</version>
      <exclusions>
        <exclusion>
          <groupId>javax.servlet</groupId>
          <artifactId>servlet-api</artifactId>
        </exclusion>
        <exclusion>
          <groupId>javax.servlet.jsp</groupId>
          <artifactId>jsp-api</artifactId>
        </exclusion>
      </exclusions>
    </dependency>
    <!--jstl  Implementation package -->
    <dependency>
      <groupId>org.glassfish.web</groupId>
      <artifactId>jstl-impl</artifactId>
      <version>1.2</version>
      <exclusions>
        <exclusion>
          <groupId>javax.servlet</groupId>
          <artifactId>servlet-api</artifactId>
        </exclusion>
        <exclusion>
          <groupId>javax.servlet.jsp</groupId>
          <artifactId>jsp-api</artifactId>
        </exclusion>
        <exclusion>
          <groupId>javax.servlet.jsp.jstl</groupId>
          <artifactId>jstl-api</artifactId>
        </exclusion>
      </exclusions>
    </dependency>

    <!-- Jackson springMVC default Json The solution choice is  Jackson, So just import jackson Of jar, You can use .-->
    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-databind</artifactId>
      <version>2.9.8</version>
    </dependency>
    <!-- FastJson -->
    <dependency>
      <groupId>com.alibaba</groupId>
      <artifactId>fastjson</artifactId>
      <version>1.2.54</version>
    </dependency>

    <!-- File upload Kit -->
    <dependency>
      <groupId>commons-io</groupId>
      <artifactId>commons-io</artifactId>
      <version>2.4</version>
    </dependency>
    <dependency>
      <groupId>commons-fileupload</groupId>
      <artifactId>commons-fileupload</artifactId>
      <version>1.3.3</version>
      <exclusions>
        <exclusion>
          <groupId>javax.servlet</groupId>
          <artifactId>servlet-api</artifactId>
        </exclusion>
      </exclusions>
    </dependency>

    <!-- lombok plug-in unit  -->
    <dependency>
      <groupId>org.projectlombok</groupId>
      <artifactId>lombok</artifactId>
      <version>1.16.18</version>
    </dependency>
    <!-- pagehelper Paging plug-ins  -->
    <dependency>
      <groupId>com.github.pagehelper</groupId>
      <artifactId>pagehelper</artifactId>
      <version>5.1.10</version>
    </dependency>

    <!-- Kaptcha, Captcha generation tool  -->
    <dependency>
      <groupId>com.github.penggle</groupId>
      <artifactId>kaptcha</artifactId>
      <version>2.3.2</version>
      <exclusions>
        <exclusion>
          <groupId>javax.servlet</groupId>
          <artifactId>javax.servlet-api</artifactId>
        </exclusion>
      </exclusions>
    </dependency>

    <!-- log4j -->
    <dependency>
      <groupId>log4j</groupId>
      <artifactId>log4j</artifactId>
      <version>1.2.17</version>
    </dependency>
    <!-- commons-logging -->
    <dependency>
      <groupId>commons-logging</groupId>
      <artifactId>commons-logging</artifactId>
      <version>1.2</version>
    </dependency>
  </dependencies>

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I have integrated a dependency here , If you need to use, you can modify or add the version according to your own needs .

We've set it up Maven After dependence , Synchronize dependencies .

It looks like , Just don't report an error .

log4j

We also need to configure the log xml, Logs are still very important in our development process .

<?xml version="1.0" encoding="UTF-8"?>
<configuration status="warn">

    <appenders>
        <console name="Console" target="SYSTEM_OUT">
            <PatternLayout pattern="[%d{HH:mm:ss:SSS}] [%p] - %l - %m%n"/>
        </console>
        <file name="log" fileName="log/test.log">
            <patternLayout pattern="%d{yyyy-MM-dd HH:mm:ss} [%1] %-5level-%msg%n"/>
        </file>
        <RollingFile name="RollingFileInfo" fileName="${sys:user.home}/logs/hpaasvc/info.log"
                     filePattern="${sys:user.home}/logs/hpaasvc/$${date:yyyy-MM}/info-%d{yyyy-MM-dd}-%i.log">
            <Filters>
                <ThresholdFilter level="INFO"/>
                <ThresholdFilter level="WARN" onMatch="DENY" onMismatch="NEUTRAL"/>
            </Filters>
            <PatternLayout pattern="[%d{HH:mm:ss:SSS}] [%p] - %l - %m%n"/>
            <Policies>
                <TimeBasedTriggeringPolicy/>
                <SizeBasedTriggeringPolicy size="100 MB"/>
            </Policies>
        </RollingFile>

        <RollingFile name="RollingFileWarn" fileName="${sys:user.home}/logs/hpaasvc/warn.log"
                     filePattern="${sys:user.home}/logs/hpaasvc/$${date:yyyy-MM}/warn-%d{yyyy-MM-dd}-%i.log">
            <Filters>
                <ThresholdFilter level="WARN"/>
                <ThresholdFilter level="ERROR" onMatch="DENY" onMismatch="NEUTRAL"/>
            </Filters>
            <PatternLayout pattern="[%d{HH:mm:ss:SSS}] [%p] - %l - %m%n"/>
            <Policies>
                <TimeBasedTriggeringPolicy/>
                <SizeBasedTriggeringPolicy size="100 MB"/>
            </Policies>
        </RollingFile>

        <RollingFile name="RollingFileError" fileName="${sys:user.home}/logs/hpaasvc/error.log"
                     filePattern="${sys:user.home}/logs/hpaasvc/$${date:yyyy-MM}/error-%d{yyyy-MM-dd}-%i.log">
            <ThresholdFilter level="ERROR"/>
            <PatternLayout pattern="[%d{HH:mm:ss:SSS}] [%p] - %l - %m%n"/>
            <Policies>
                <TimeBasedTriggeringPolicy/>
                <SizeBasedTriggeringPolicy size="100 MB"/>
            </Policies>
        </RollingFile>

    </appenders>

    <loggers>
        <!-- To filter out spring and hibernate Some of them are useless debug Information -->
        <logger name="org.springframework" level="INFO">
        </logger>
        <logger name="org.hibernate" level="INFO">
        </logger>
        <root level="all">
            <appender-ref ref="Console"/>
            <appender-ref ref="RollingFileInfo"/>
            <appender-ref ref="RollingFileWarn"/>
            <appender-ref ref="RollingFileError"/>
        </root>
    </loggers>

</configuration>

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Of course , You can also use properties File to configure .

# Set root category priority to INFO and its only appender to CONSOLE.
#log4j.rootCategory=INFO, CONSOLE            debug   info   warn error fatal
log4j.rootCategory=info, CONSOLE, LOGFILE

# Set the enterprise logger category to FATAL and its only appender to CONSOLE.
log4j.logger.org.apache.axis.enterprise=FATAL, CONSOLE

# CONSOLE is set to be a ConsoleAppender using a PatternLayout.
log4j.appender.CONSOLE=org.apache.log4j.ConsoleAppender
log4j.appender.CONSOLE.layout=org.apache.log4j.PatternLayout
log4j.appender.CONSOLE.layout.ConversionPattern=%d{ISO8601} %-6r [%15.15t] %-5p %30.30c %x - %m\n

# LOGFILE is set to be a File appender using a PatternLayout.
log4j.appender.LOGFILE=org.apache.log4j.FileAppender
log4j.appender.LOGFILE.File=d:\axis.log
log4j.appender.LOGFILE.Append=true
log4j.appender.LOGFILE.layout=org.apache.log4j.PatternLayout
log4j.appender.LOGFILE.layout.ConversionPattern=%d{ISO8601} %-6r [%15.15t] %-5p %30.30c %x - %m\n

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Other dependence

In addition to these configurations , We have many others xml, It also needs to be configured , I'll provide one directly here xml Package , It can be modified to use .

If you want, you can add me , Send it directly to you ,747945307.

Once these configurations are in place , Basically, the structure comes out .

Epilogue

This article is a bit rough , You need to think about it yourself , The second time I became proficient . Here you just create the structure , You need to learn to use it slowly ！